Input apparatus and information processing system

ABSTRACT

Provided is an input apparatus, including: a touch panel configured to receive input operation of at least selecting a medical image, the medical image being displayed on a display area of a display apparatus; and an operation input unit configured to receive spatial operation of the medical image as continuous input, the medical image being displayed on the display area.

CROSS REFERENCE TO RELATED APPLICATIONS

The present application is a Continuation of application Ser. No.13/901,750, filed May 24, 2013, and claims the benefit of JapanesePriority Patent Application JP 2012-149725 filed Jul. 3, 2012, theentire contents of which are incorporated herein by reference.

BACKGROUND

This technology relates to an input apparatus configured to operate aviewer, which is used to observe a medical image.

According to a browsing method in the past, a client viewer reads animage (tile image), which is divided into tiles and stored in an imageserver, based on a navigation operation instruction from a user. Theclient viewer displays the read image. A user merely selects a portion,which he wishes to browse. As a result, a system is capable ofrecognizing and displaying the corresponding tile image.

Further, for example, Japanese Patent Application Laid-open No.2006-519443 discloses the following technology. First, a client viewerrequests for image data at a certain resolution. The image data is in avirtual slide image file. Next, a server system obtains a compressedblock of image data, which includes image data of which resolution isclose to the requested resolution. The server system sends the datablock to the client. Next, the client zooms in/out the image data, andpresents the image at the requested resolution.

SUMMARY

According to Japanese Patent Application Laid-open No. 2006-519443 andin general, in a case of observing a medical image by using a viewer, ageneral-purpose computer is mostly used as a viewer computer. In thiscase, a keyboard or a mouse is used as an input apparatus when observinga medical image. User-friendliness when observing a medical image ispoor.

After a keyboard and a mouse, a touch panel is used when observing amedical image, but it still has problems. First, let's say that a userinputs information in a touch panel based on an absolute position. Inthis case, it is necessary to prepare a touch panel, of which resolutionis the same as the resolution of a high-resolution window that is usedto observe a medical image. This is not realistic. Further, let's saythat a user inputs information in a touch panel based on a relativeposition. In this case, for example, it is necessary to repeat a smallmovement little by little in order to input an instruction to move apointer for a long distance. It takes a lot of trouble with input.

In view of the above-mentioned circumstances, it is desirable to providean input apparatus and an information processing system, each of whichis capable of improving user-friendliness of a viewer that is used toobserve a medical image.

(1) According to an embodiment of this technology, there is provided aninput apparatus, including: a touch panel configured to receive inputoperation of at least selecting a medical image, the medical image beingdisplayed on a display area of a display apparatus; and an operationinput unit configured to receive spatial operation of the medical imageas continuous input, the medical image being displayed on the displayarea.

According to this technology, operation to the input apparatus is mainlydivided into two kinds of input operation, i.e., operation of selectinga medical image and spatial operation of a displayed medical image. Adevice suitable for the operation of selecting a medical image is used,and the device receives input operation. Another device suitable for thespatial operation is used, and the device receives input operation. As aresult, user-friendliness of the input apparatus may be improved.

Here, one operation of selecting a medical image is to select a targetmedical image from a list by using a GUI. The list is a group ofcandidates to be displayed on the display area of the display apparatus.Another operation of selecting a medical image is to drag and drop aselected medical image in a display area, on which the selected medicalimage is to be displayed, and to display the selected medical image. Asdescribed above, operation using a touch panel is suitable for theoperation of selecting a medical image.

Further, spatial operation of a medical image is, for example, operationof zooming in/out, moving, and rotating the display area of a medicalimage, which is displayed on the display area of the display apparatus.Further, an example of continuous input operation is operation ofkeeping on pressing a button. Another example of continuous inputoperation is operation of keeping on tilting an analog stick in onedirection. In a case of zooming in the display area of the medical imagecontinuously, the button is continuously pressed. In a case of movingthe display area in one direction continuously, the analog stick iscontinuously tilted in one direction. As described above, the spatialoperation is continuous operation. As described above, a button or ananalog stick is suitable for spatial operation.

(2) According to an embodiment of this technology, there is provided theinput apparatus, in which the operation input unit is configured toreceive an instruction to change a display area of the medical image asthe spatial operation of the medical image, the medical image beingdisplayed on the display area, the instruction being at least one ofinstructions to zoom in/out, move, and rotate the medical image.

According to this technology, the spatial operation of the medical imageis operation to change the display area of the medical image displayedon the display area. Specifically, the spatial operation of the medicalimage is at least one of zooming in/out operation, moving operation, androtating operation. As described above, such operation is suitable toinput information by using a button or an analog stick. It is possibleto improve user-friendliness of zooming in/out operation, movingoperation, and rotating operation by using such devices.

(3) According to an embodiment of this technology, there is provided theinput apparatus further including: a display unit spatiallycorresponding to the touch panel; and a controller configured to displaya set on the display unit, the set being a group of at least one medicalimage, to display a low-resolution window on the display unit, thelow-resolution window being a low-resolution image of a display area onthe display apparatus, to send an instruction to the display apparatusto call up a medical image on the display area of the display apparatus,the medical image being selected from the displayed set by a user viathe touch panel, and to display an image on the low-resolution window,the image being a low-resolution image of the medical image.

According to this technology, the resolution of the display of the touchpanel is low. Because of this, it is not possible to display the displayarea of the display apparatus, of which definition is high in order toobserve a medical image, on the display of the touch panel as it is.Because of this, it is not possible to input an absolute position of thedisplay of the display apparatus, in the touch panel as it is. In viewof this, a low-resolution image of the display area on the displayapparatus is obtained. The entire screen of the display apparatus isdisplayed on the touch panel. As a result, it is possible to input anabsolute position of the display of the display apparatus, on the touchpanel. Because of this, it is possible to avoid the trouble of having toinput operation little by little repeatedly in a case of relativeposition input.

(4) According to an embodiment of this technology, there is provided theinput apparatus, in which the controller is configured to display, onthe display unit, a thumbnailed medical image in the set, to detect thata user flicks and taps the thumbnail displayed on the touch panel tothereby select the thumbnailed medical image, and to display a medicalimage on the display unit, the medical image corresponding to thethumbnailed medical image.

According to this technology, the thumbnailed medical images aredisplayed on the display of the touch panel. A user flicks and taps oneof the thumbnails, to thereby select an image. As a result, it ispossible to further improve user-friendliness of the input apparatus.

(5) According to an embodiment of this technology, there is provided theinput apparatus further including: a case accommodating the touch panel,the operation input unit, and the display unit, in which the touch panelis arranged on one main surface side of the case, and the inputapparatus further comprises a touch pad, the touch pad being configuredto receive at least selection of the medical image, the touch pad beingarranged on a second main surface of the case, the second main surfacebeing opposite to a first main surface, the touch panel being arrangedon the first main surface.

According to this technology, a touch panel and in addition a touch padare used to receive input operation of selecting a medical image.Because of this, the number of received operation is smaller than thenumber of operation input received only by a touch panel. Because ofthis, it is not necessary to make input operation complicated in orderto distinguish one operation from another. Each operation may be madesimple. It is possible to further improve user-friendliness of operationinput.

(6) According to an embodiment of this technology, there is provided theinput apparatus in which the controller is configured to recognizehandwritten data, the data input in at least one of the touch panel andthe touch pad, and to reflect the recognized data in display on thedisplay apparatus.

According to this technology, certain handwritten data is input in thetouch panel or the touch pad. Then, the controller recognizes the data.The data is reflected in display on the display apparatus. Because ofthis, a user is capable of inputting an instruction with an effortsmaller than the effort in a case of firstly selecting an instructionfrom a menu. As a result, it is possible to further improveuser-friendliness of the input apparatus.

(7) According to an embodiment of this technology, there is provided theinput apparatus in which the controller is configured to recognize thedata as a numerical value, and to divide the display area into a number,the number corresponding to the recognized numerical value.

According to this technology, a user traces a number shape on the touchpanel or the touch pad. Then, the controller recognizes the handwrittendata as a numerical value. Then, the controller divides the displayarea. Because of this, a user is capable of inputting an instruction todivide a display area with an effort smaller than the effort in a caseof firstly selecting an instruction to divide a display from a menu andinputting the number of division. Because of this, it is possible tofurther improve user-friendliness of the input apparatus.

(8) According to an embodiment of this technology, there is provided aninformation processing system, including: a display apparatus includinga display area, a medical image being displayed on the display area; andan input apparatus including a touch panel configured to receive inputoperation of at least selecting a medical image, the medical image beingdisplayed on the display area, and an operation input unit configured toreceive spatial operation of the medical image as continuous input, themedical image being displayed on the display area.

As described above, according to this technology, it is possible toimprove user-friendliness of a viewer, which is used to observe amedical image.

These and other objects, features and advantages of the presentdisclosure will become more apparent in light of the following detaileddescription of best mode embodiments thereof, as illustrated in theaccompanying drawings.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a diagram schematically showing an environment in which thistechnology is used;

FIG. 2 is a diagram briefly showing the flow of information using atouch panel of an input apparatus 100 of this technology;

FIG. 3 is a block diagram showing the hardware configuration of a viewercomputer 200 of this technology;

FIG. 4 is a block diagram showing the hardware configuration of theinput apparatus 100 of this technology;

FIG. 5 is a diagram showing the hardware configuration of an inputapparatus 101 and the hardware configuration of an input apparatus 102;

FIG. 6 is a diagram showing an example in a case where a touch panel TPand a touch pad TD share operation input; and

FIG. 7 is a flowchart showing the flow of operation of selecting amedical image by using the input apparatus 100, observing the selectedmedical image, and adding an annotation to the observed medical image.

DETAILED DESCRIPTION OF EMBODIMENTS

Hereinafter, an embodiment of the present disclosure will be describedwith reference to the drawings.

[Outline of this Technology]

This technology relates to an input apparatus. The input apparatus isconnected to a viewer computer via a wireless LAN or the like and isused. A viewer runs in the viewer computer. The viewer is software, andis used to observe medical images. The input apparatus roughly dividesinput operation into two kinds of input operation, i.e., discrete inputoperation and continuous input operation. The input apparatus uses aninput device suitable for the discrete input operation and another inputdevice suitable for the continuous input operation. With thisconfiguration, information may be input easily. An observer of a medicalimage may easily select a medical image to be observed by using theinput apparatus, and may easily operate the input apparatus when heobserves the selected medical image in detail.

Note that the above-mentioned “discrete input operation” is, forexample, the following operation using a touch panel. That is, anobserver touches an object displayed on a touch panel, and drags theobject to a predetermined position. Further, the “continuous inputoperation” is, for example, the following operation using a button or ananalog stick. That is, an observer keeps on pressing a button, and keepson tilting an analog stick in one direction.

FIG. 1 is a diagram schematically showing an environment in which thistechnology is used. A user, who observes a medical image, has an inputapparatus 100 of this technology on hand. Further, the input apparatus100 communicates with a viewer computer 200 via wireless communication.The viewer computer 200 includes a display unit 26. Medical images aredisplayed on the display unit 26. The input apparatus 100 includes atouch panel TP at the center of the front surface. The input apparatus100 further includes buttons BT and analog sticks AS on both sides ofthe touch panel TP.

In FIG. 1, medical images are displayed on four divided windows LW(display areas) on the display unit 26. Symbols of four divided windowsWD are displayed on the right portion of the touch panel TP of the inputapparatus 100. The four divided windows WD correspond to the fourdivided windows LW, respectively. The windows LW on the display unit 26correspond to the windows WD on the touch panel TP one to one. Forexample, the upper right window LW corresponds to the upper right windowWD. Note that a list of thumbnails of the medical images is displayed onthe left portion of the touch panel TP.

A user operates the input apparatus 100, which he has with his hand, andselects a medical image to be observed from the list of the medicalimages on the left portion of the touch panel TP. Then, the user dragsand drops the selected medical image on one of the symbols of the fourwindows WD on the right portion of the touch panel TP. Information onthe selected medical image and information on the window LW, on whichthe selected medical image is to be displayed, are transmitted to theviewer computer 200 via wireless communication. The viewer computer 200displays the selected medical image on the selected window LW inresponse to the transmitted information.

When a user observes a medical image displayed on the window LW, heinputs operation of zooming in/out, moving, and rotating an image, forexample. The user inputs such operation by using the buttons BT and theanalog sticks AS of the input apparatus 100.

Note that the four divided windows LW and the four divided windows WDare described above. This is merely an example. Alternatively, anundivided window LW and an undivided window WD may be used.Alternatively, two, three, or five or more divided windows LW, and two,three, or five or more divided windows WD may be used.

Further, in the above-mentioned example, the list of the thumbnails ofthe medical images is displayed on the left portion of the touch panel,and the symbol windows WD are displayed on the right portion. However,the display position is not limited to this example. For example, thelist of the thumbnails of the medical images may be displayed on theright portion and the symbol windows WD may be displayed on the leftportion. Because of this, a left-handed user may easily drag and drop amedical image.

FIG. 2 is a diagram briefly showing the flow of information using thetouch panel of the input apparatus 100 of this technology. Note thatFIG. 2 is based on the premise that a server computer 300 stores medicalimages. First, the input apparatus 100 displays the list of thethumbnails of the medical images and the symbol windows WD on the touchpanel TP as UIs (User Interfaces). A user selects a target medical imageand a window LW, on which the medical image is to be displayed, by usingthe UIs. The input apparatus 100 analyzes the input based on theselection. The input apparatus 100 transmits information on the selectedmedical image and on the selected window LW to the viewer of the viewercomputer 200.

The viewer sends an image request to the server computer 300 based onthe information on the selected medical image. A server program of theserver computer 300 retrieves a medical image in response to thereceived image request. The server program of the server computer 300replies image content to a viewer of the viewer computer 200. The viewerdisplays a medical image, which is the received image content, on thewindow LW selected by the user.

The flow from operation of the touch panel to display of a medical imageon the window LW of the viewer has been described above.

Problems of Related Technology and Solutions

Here, problems of a related technology and solutions of this technologywill be briefly described again.

(1) In the past, if a user observes a medical image by using a viewer ofa viewer computer, the user uses one of a touch panel, a button, and ananalog stick to input operation. Operation input by using a touch panelis suitable to select a medical image and to operate a window of theviewer. However, operation input by using a touch panel is not suitableto zoom in/out, move, and rotate (hereinafter, referred to as viewingoperation) a medical image displayed on a window for a long time. To thecontrary, a button and an analog stick are suitable for such viewingoperation. However, a button and an analog stick are not really suitableto select a medical image and to operate a window.

As described above, a tradeoff relation is established between a touchpanel, and a button and an analog stick. In view of this, thistechnology provides both the touch panel, and the button and analogstick. Operation suitable for each device is allocated to the device. Asa result, operation input may be optimized.

(2) Further, in the past, if touch operation is input in an absoluteposition of a touch panel, it is necessary to use a touch panel, ofwhich resolution is the same as the display resolution of a display.However, in general, the extremely high-definition display unit 26 isused to observe a medical image. It is not realistic to use a touchpanel, of which resolution is the same as the resolution of theextremely high-definition display unit 26.

In view of this, touch input in an absolute position is not adopted. Itis necessary to operate a pointer in a relative position by using atouch panel, of which resolution is lower than the display resolution ofa display. In this case, for example, if an area, in which a user iscapable of moving a mouse, is narrow, it is necessary to move the mouselittle by little repeatedly in order to move a pointer by a necessaryamount. As is this example, it is necessary to wipe a touch panel littleby little repeatedly to thereby move a pointer, which is troublesome andproblematic.

In view of this, according to this technology, symbols of viewerwindows, which are displayed on the high-definition display unit 26, aredisplayed on the low-resolution touch panel. As a result, a user iscapable of inputting operation in an absolute position of thelow-resolution touch panel.

Low-resolution symbols of the viewer windows are displayed on the touchpanel. As a result, it is possible to input operation in an absoluteposition of the low-resolution touch panel. Because of this, since it ispossible to input operation in an absolute position, it is possible toavoid the trouble of having to input operation little by littlerepeatedly in a case of input such as relative input using an operationsurface having a limited area.

Note that examples of a method of creating a symbol include thefollowing methods. A window displayed on the high-definition displayunit 26 may be downconverted to thereby obtain a low-resolution symbol.Alternatively, a window displayed on the high-definition display unit 26may be replaced by a low-resolution icon, which symbolizes the window LWdisplayed on a high-definition window.

(3) The following is not a problem of a related technology. A touch padmay be provided in addition to a touch panel in order to improveuser-friendliness in a case where a user inputs operation by using atouch panel. For example, the touch panel TP is provided on the frontsurface of the input apparatus 100, and a touch pad is provided on theback surface of the input apparatus 100.

With this structure, the touch panel TP on the front surface and thetouch pad on the back surface share operation input in a touch panel.The number of the kinds of operation input in each of the touch panel TPand the touch pad is made small. Operation input in each of the touchpanel TP and the touch pad is made simple. As a result,user-friendliness may be improved.

Note that the touch panel TP and the touch pad may share operation inputin a touch panel as follows. The touch panel on the front surface may beused for operation, which may raise no problem even if a finger thattouches an operation target partially hides the operation targetdisplayed on the touch panel. Further, the touch pad on the back surfacemay be used for operation, which may raise a problem if a finger thattouches an operation target hides the operation target displayed on thetouch panel.

[Configuration of Viewer Computer 200]

Next, the hardware configuration of the viewer computer 200 will bedescribed. A dedicated apparatus or a general-purpose computer may beused as a viewer computer as long as the viewer computer is capable ofexecuting a viewer. Here, the hardware configuration in a case where ageneral-purpose computer is used will be described.

FIG. 3 is a block diagram showing the hardware configuration of theviewer computer 200 of this technology.

The viewer computer 200 includes a CPU (Central Processing Unit) 21, aROM (Read Only Memory) 22, a RAM (Random Access Memory) 23, and an inputunit 24. The CPU 21 executes arithmetic control. The RAM 23 is a workmemory for the CPU 21. Instructions are input in the input unit 24depending on operation by a user. The viewer computer 200 furtherincludes an interface unit 25, the display unit 26, storage 27, anetwork interface unit 28, and a bus 29 connecting them each other.

Programs for executing various processes are stored in the ROM 22. Thenetwork interface unit 28 may be connected to the input apparatus ofthis technology via a wired LAN, a wireless LAN, Bluetooth (registeredtrademark), or the like.

A liquid crystal display, an EL (Electro Luminescence) display, a plasmadisplay, or the like may be used as the display unit 26 for displayingan image. Note that a high-definition display, of which resolution isenough high to observe a medical image, is used for a liquid crystaldisplay or the like. A magnetic disk such as a HDD (Hard Disk Drive), asemiconductor memory, an optical disk, or the like may be used as thestorage 27.

The CPU 21 expands a program, which corresponds to an instructionsupplied from the input unit 24 out of a plurality of programs stored inthe ROM 22, in the RAM 23. The CPU 21 appropriately controls the displayunit 26 and the storage 27 based on the expanded program.

[Configuration of Input Apparatus 100 (No. 1)]

Next, the hardware configuration of the input apparatus 100 will bedescribed. FIG. 4 is a block diagram showing the hardware configurationof the input apparatus 100 of this technology.

The input apparatus 100 includes a controller 11, an input I/F unit 12,a wireless LAN unit 13, a display I/F unit 14, a touch screen controller15, the touch panel TP, and a touch pad TD on the back surface.

The controller 11 controls the entire input apparatus 100. Input in thebuttons BT and the analog sticks AS is transmitted to the controller 11via the input I/F unit 12. The controller 11 analyzes the transmittedinformation. The controller 11 sends an analysis result to the viewercomputer 200 via the wireless LAN unit 13.

Further, the controller 11 receives information on a high-resolutionwindow from the viewer computer 200 via the wireless LAN unit 13. Thehigh-resolution window is displayed on the display unit 26 of the viewercomputer 200. The controller 11 creates a low-resolution window based onthe information on the high-resolution window. The low-resolution windowis obtained by making the high-resolution window to have low resolution.The controller 11 displays the low-resolution window on the touch panelTP via the display I/F unit 14.

Similarly, the controller 11 receives thumbnails of medical images fromthe viewer computer 200 via the wireless LAN unit 13. The controller 11creates a tray, i.e., a set of medical images of each patient. Thecontroller 11 displays the tray on the touch panel TP. Further, thecontroller 11 receives operation input in the touch panel TP and thetouch pad TD on the back surface via the touch screen controller 15. Thecontroller 11 analyzes the received input. Further, the controller 11updates an image displayed on the touch panel TP based on the analysisresult. The controller 11 sends the analysis result to the viewercomputer 200 via the wireless LAN unit 13.

The input I/F unit 12 receives input in the buttons BT and the analogsticks AS. The input I/F unit 12 transmits the input to the controller11.

The wireless LAN unit 13 wirelessly communicates with the networkinterface unit 28 of the viewer computer 200. As a result, communicationbetween the controller 11 and the viewer computer 200 is established.Any wireless standard may be employed as long as wireless communicationis established.

The display I/F unit 14 controls display on the windows on the touchpanel TP. The display I/F unit 14 displays the list of the thumbnails ofthe medical images and the low-resolution windows WD or the symbolwindows WD, which are transmitted from the controller 11, on the touchpanel.

The touch screen controller 15 receives touch input in the touch screenof the the touch panel TP on the front surface of the input apparatus100 and in the touch pad TD on the back surface of the input apparatus100. The touch screen controller 15 supplies the touch input to thecontroller 11.

[Configuration of Input Apparatus 100 (No. 2)]

Next, the hardware configuration of an input apparatus 101 and thehardware configuration of an input apparatus 102 will be described. Inthe above description, the input apparatus 100 includes both the buttonsBT and the analog sticks AS, and the touch panel TP and the touch padTD. To the contrary, here, separate input apparatuses will be described.The separate input apparatuses include the input apparatus 101 onlyincluding the buttons BT and the analog sticks AS, and the inputapparatus 102 only including the touch panel TP and the touch pad TD.

FIG. 5 is a diagram showing the hardware configuration of the inputapparatus 101 and the hardware configuration of the input apparatus 102.

The hardware configuration of the input apparatus 101 and the hardwareconfiguration of the input apparatus 102 have the followingcharacteristics. Since the input apparatuses are separate, there are twoseparated main bodies. The one controller 11 of the input apparatus 100is divided into two controllers 11 a and 11 b.

Further, the one wireless LAN unit 13 of the input apparatus 100 isdivided into a Bluetooth (registered trademark) unit 13 a of the inputapparatus 101, and a wireless LAN unit 13 b of the input apparatus 102.Note that, here, for example, the Bluetooth (registered trademark) unitis provided based on the premise that the input apparatus 101 wirelesslycommunicates with the viewer computer 200 via Bluetooth (registeredtrademark). Alternatively, any wireless standard may be employed as longas wireless communication is executed.

Note that the function of each block of FIG. 5 is the same as thefunction of each block of the all-in-one input apparatus 100.Alternatively, the function of each block of FIG. 5 is obtained bydividing each function of the all-in-one input apparatus 100. Overlappeddescription will be omitted.

[Operation Input Shared by Touch Panel and Touch Pad]

The touch panel TP and the touch pad TD on the back surface of the inputapparatus 100 share operation input. Next, an example of this situationwill be described. FIG. 6 is a diagram showing an example in a casewhere the touch panel TP and the touch pad TD share operation input. Thesharing of operation input described below is actually an example.Operation input, which is assigned to the touch panel TP in thisexample, may be assigned to the touch pad TD. Operation input, which isassigned to the touch pad TD in this example, may be assigned to thetouch panel TP. Alternatively, a different sharing method may beemployed.

First, a display DP0 on the upper part of FIG. 6 is actually displayedon the touch panel TP. Thumbnails SN of medical images are arrayed in alist. The lists are sorted for each tray TR. The lists for each tray TRare displayed on the left portion of the display DP0. Further, the fourwindows WD are displayed on the right portion. An image IM, which is apart of a medical image, is displayed on the window WD.

The display DP0 is divided into objects controlled by using the touchpanel TP, and objects controlled by using the touch pad TD. Displays DP1and DP2 on the lower part of FIG. 6 show this situation. Note that thedisplays DP1 and DP2 are prepared for explaining this situation. Thatis, the displays DP1 and DP2 are not displayed on the touch panelactually.

A user operates the thumbnails SN of medical images displayed on theleft portion of the display DP1, and the images IM displayed on theright portion, by using the touch panel TP. Further, a user operates thetrays TR, each of which stores a set of the thumbnails SN, displayed onthe left portion of the display DP2, and the windows WD displayed on theright portion, by using the touch pad TD.

A user directly flicks and taps one of a plurality of thumbnailsdisplayed on the left portion of the display DP1 with his finger or thelike, to thereby select a medical image to be observed. Further, a userdirectly drags and drops the thumbnail of the selected image on one ofthe positions of the four images IM on the right portion of the displayDP1. As a result, the user selects the position, on which the image IMis displayed. Further, a user directly drags the image IM displayed onthe right portion of the display DP1. As a result, the user changes theposition, on which the image IM is displayed.

Further, a user wipes the left area of the touch pad TD, which is on theback surface of the input apparatus 100, in the lateral direction. As aresult, the user selects the tray TR, which includes a set of medicalimages to be observed and displayed on the left portion of the displayDP2.

Further, a user traces a number shape on the right area of the touch padTD. As a result, the user instructs to divide the window WD into thewindows WD, the number of which corresponds to the traced number. Theright portion of the display DP2 shows the following situation. A usertraces (hereinafter, referred to as gestures) the “4” shape. As aresult, the user instructs to divide each of the windows WD, LW into “4”windows. The controller 11 analyzes the operation input, and recognizes“4”. The controller 11 divides the window WD into four windows WD. Asdescribed above, the controller 11 recognizes a handwritten letter inputin the touch panel TP and the touch pad TD. The controller 11 behavesdepending on the recognized letter.

As described above, the touch panel TP and the touch pad TD share inputoperation. As a result, the number of the kinds of operation input ineach device is decreased. Operation is made simple. As a result, overalluser-friendliness may be improved.

[Operation Example of Input Apparatus 100]

Next, an example of the following operation will be described. A medicalimage is selected by using the input apparatus 100. The selected medicalimage is observed. An annotation is added to the observed medical image.FIG. 7 is a flowchart showing the flow of operation of selecting amedical image by using the input apparatus 100, observing the selectedmedical image, and adding an annotation to the observed medical image.

First, a user inputs gesture of “4” in the touch pad TD, which is on theback surface of the input apparatus 100, in order to divide the windowLW into four. The window LW is used to observe a medical image. Thetouch pad TD transmits the input to the controller 11 via the touchscreen controller 15.

The controller 11 changes the number of the windows WD, which aredisplayed on the touch panel TP, to “four” via the display I/F unit 14(Step S1). Further, the instruction to divide the window LW into four istransmitted to the viewer of the viewer computer 200 via the wirelessLAN unit 13. The window LW on the viewer is also divided into four.

Next, a user flicks and taps the thumbnail SN portion on the leftportion of the display DP0 of the touch panel TP, in order to selectmedical images, which are to be displayed on the four windows LW and areto be observed (Step S2). Note that, here, to make description simple,an appropriate tray TR, which includes a set of medical images, isalready selected. It is not necessary to select a tray TR here.

Next, a user drags and drops the thumbnail SN, which shows the selectedmedical image, on the window WD corresponding to the predeterminedwindow LW, on the touch panel TP. This operation is to select the windowLW, on which the selected medical image is displayed (Step S3). Thisoperation is transmitted to the controller 11 via the touch screencontroller 15. The controller 11 analyzes the input.

The controller 11 analyzes the input, to thereby obtain information thatwhich medical image is displayed on which window WD. So the controller11 sends the information to the viewer computer 200 via the wireless LANunit 13. The viewer computer 200 changes an image displayed on thedisplay unit 26 based on the received information. The viewer computer200 displays the selected medical image on the window LW correspondingto the selected window WD.

The controller 11 obtains the medical image, which is displayed on thewindow LW, from the viewer computer 200. The controller 11 creates alow-resolution image of the obtained image. The controller 11 displaysthe low-resolution image on the window WD, which corresponds to thewindow LW on which the medical image is displayed, via the display I/Funit.

A user repeats the operation of Steps S2 and S3 until medical images tobe observed are displayed on all the the four windows LW (Step S4).

Next, a user taps a title bar of the window WD on the touch panel TP andselects an active window, in order to select one of the four windows LWand to display an image on the selected window LW (Step S5). Informationthat which window WD is activated is transmitted to the viewer of theviewer computer 200. The target window LW is activated. Operation on thewindow LW is allowed.

Next, a user presses the button BT of the input apparatus 100, in orderto zoom in/out the medical image, which is displayed on the selectedactive window LW (Step S6). The zoom in/out instruction input via thebuttons BT is transmitted to the viewer of the viewer computer 200. Theimage displayed on the display unit 26 is changed. In addition, thecontroller 11 changes the image displayed on the touch panel TP.

Next, a user tilts the analog stick AS, in order to change the displayarea of the medical image displayed on the selected window LW (Step S7).Similar to Step S6, the image displayed on the the active window LW onthe display unit 26 is changed. In addition, the image displayed on thethe active window WD on the touch panel TP is changed.

Next, a user taps or drags a predetermined position on the touch panelTP, in order to add an annotation to the predetermined position of amedical image (Step S8). Because of this operation, information on aposition, on which an annotation is added, is transmitted to the viewerof the viewer computer 200. As a result, it is possible to add anannotation to an appropriate position.

A user activates the four windows LW in turn, and executes the operationof Steps S5 to S8 (Step S9).

Described above is an example of operation of selecting a medical imageby operating the input apparatus 100, observing the selected medicalimage, and adding an annotation to the observed medical image.

[Other Configurations of this Technology]

Note that this technology may adopt the following configurations.

(1) An input apparatus, comprising:

a touch panel configured to receive input operation of at leastselecting a medical image, the medical image being displayed on adisplay area of a display apparatus; and

an operation input unit configured to receive spatial operation of themedical image as continuous input, the medical image being displayed onthe display area.

(2) The input apparatus according to (1), wherein

the operation input unit is configured to receive an instruction tochange a display area of the medical image as the spatial operation ofthe medical image, the medical image being displayed on the displayarea, the instruction being at least one of instructions to zoom in/out,move, and rotate the medical image.

(3) The input apparatus according to (1) or (2), further comprising:

a display unit spatially corresponding to the touch panel; and

a controller configured

-   -   to display a set on the display unit, the set being a group of        at least one medical image,    -   to display a low-resolution window on the display unit, the        low-resolution window being a low-resolution image of a display        area on the display apparatus,    -   to send an instruction to the display apparatus to call up a        medical image on the display area of the display apparatus, the        medical image being selected from the displayed set by a user        via the touch panel, and    -   to display an image on the low-resolution window, the image        being a low-resolution image of the medical image.        (4) The input apparatus according to (3), wherein

the controller is configured

-   -   to display, on the display unit, a thumbnailed medical image in        the set,    -   to detect that a user flicks and taps the thumbnail displayed on        the touch panel to thereby select the thumbnailed medical image,        and    -   to display a medical image on the display unit, the medical        image corresponding to the thumbnailed medical image.        (5) The input apparatus according to (3) or (4), further        comprising:

a case accommodating the touch panel, the operation input unit, and thedisplay unit, wherein

the touch panel is arranged on one main surface side of the case, and

the input apparatus further comprises a touch pad, the touch pad beingconfigured to receive at least selection of the medical image, the touchpad being arranged on a second main surface of the case, the second mainsurface being opposite to a first main surface, the touch panel beingarranged on the first main surface.

(6) The input apparatus according to (5), wherein

the controller is configured

-   -   to recognize handwritten data, the data input in at least one of        the touch panel and the touch pad, and    -   to reflect the recognized data in display on the display        apparatus.        (7) The input apparatus according to (6), wherein

the controller is configured

-   -   to recognize the data as a numerical value, and    -   to divide the display area into a number, the number        corresponding to the recognized numerical value.        (8) An information processing system, comprising:

a display apparatus including a display area, a medical image beingdisplayed on the display area; and

an input apparatus including

-   -   a touch panel configured to receive input operation of at least        selecting a medical image, the medical image being displayed on        the display area, and    -   an operation input unit configured to receive spatial operation        of the medical image as continuous input, the medical image        being displayed on the display area.

[Supplementary Note]

It should be understood by those skilled in the art that variousmodifications, combinations, sub-combinations and alterations may occurdepending on design requirements and other factors insofar as they arewithin the scope of the appended claims or the equivalents thereof.

The present disclosure contains subject matter related to that disclosedin Japanese Priority Patent Application JP 2012-149725 filed in theJapan Patent Office on Jul. 3, 2012, the entire content of which ishereby incorporated by reference.

What is claimed is:
 1. An input apparatus, comprising: a touch panelconfigured to receive input operation of at least selecting a medicalimage, the medical image being displayed on a display area of a displayapparatus; and an operation input unit configured to receive spatialoperation of the medical image as continuous input, the medical imagebeing displayed on the display area.
 2. The input apparatus according toclaim 1, wherein the operation input unit is configured to receive aninstruction to change a display area of the medical image as the spatialoperation of the medical image, the medical image being displayed on thedisplay area, the instruction being at least one of instructions to zoomin/out, move, and rotate the medical image.
 3. The input apparatusaccording to claim 2, further comprising: a display unit spatiallycorresponding to the touch panel; and a controller configured to displaya set on the display unit, the set being a group of at least one medicalimage, to display a low-resolution window on the display unit, thelow-resolution window being a low-resolution image of a display area onthe display apparatus, to send an instruction to the display apparatusto call up a medical image on the display area of the display apparatus,the medical image being selected from the displayed set by a user viathe touch panel, and to display an image on the low-resolution window,the image being a low-resolution image of the medical image.
 4. Theinput apparatus according to claim 3, wherein the controller isconfigured to display, on the display unit, a thumbnailed medical imagein the set, to detect that a user flicks and taps the thumbnaildisplayed on the touch panel to thereby select the thumbnailed medicalimage, and to display a medical image on the display unit, the medicalimage corresponding to the thumbnailed medical image.
 5. The inputapparatus according to claim 3, further comprising: a case accommodatingthe touch panel, the operation input unit, and the display unit, whereinthe touch panel is arranged on one main surface side of the case, andthe input apparatus further comprises a touch pad, the touch pad beingconfigured to receive at least selection of the medical image, the touchpad being arranged on a second main surface of the case, the second mainsurface being opposite to a first main surface, the touch panel beingarranged on the first main surface.
 6. The input apparatus according toclaim 5, wherein the controller is configured to recognize handwrittendata, the data input in at least one of the touch panel and the touchpad, and to reflect the recognized data in display on the displayapparatus.
 7. The input apparatus according to claim 6, wherein thecontroller is configured to recognize the data as a numerical value, andto divide the display area into a number, the number corresponding tothe recognized numerical value.
 8. An information processing system,comprising: a display apparatus including a display area, a medicalimage being displayed on the display area; and an input apparatusincluding a touch panel configured to receive input operation of atleast selecting a medical image, the medical image being displayed onthe display area, and an operation input unit configured to receivespatial operation of the medical image as continuous input, the medicalimage being displayed on the display area.